| 211. | .pro | Graphics file (Pagis Pro 3.0) ◊ Graphics profile file (DOS) ◊ Profile (configuration data) ◊ Profile file (Euphoria, Terramodel) ◊ Prolog language source code file |
| 212. | .proj | Project File (Interface Builder) (NeXT) |
| 213. | .prp | Data conversion saved project file (Oberon Prospero) ◊ Model properties (Rational Rose) |
| 214. | .prr | The Perfect Resume data file (Perfect Resume) |
| 215. | .prs | Presentation (Harvard Graphics Win) ◊ Printer Resource eg. fonts (WordPerfect) ◊ Procedure (dBASE IV) |
| 216. | .prt | A print-formatted file ◊ Component (P-CAD) ◊ Part file (PTC Pro/Engineer, CADkey, SolidWorks) ◊ Printer driver (Dr.Halo) |
| 217. | .prv | Internet provider template file (psiMail) |
| 218. | .prvkr | Private keyring (Pretty Good Privacy) |
| 219. | .prx | Compiled program (FoxPro) |
| 220. | .prz | Graphics file (Lotus Freelance 97) |
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